Name:Rumen Bolus Tag Description: The LF RFID Rumen tag(transponder) is a Special design for ruminant animals like cattle, Sheep, or deer. It’s another choice besides RFID Eartag, can be inserted into animal’s rumen via oesophagus by a special tool Electrical characteristics: Chip type ISO11785,(EM4469,EM4105,Hitag S256) Operating frequency 125 KHz ,134.2kHz Read range: Up to 120 cm (Depend on environments) General characteristics of transponder: Operating temperature -25 ºC / +85 ºC Storage temperature -40 ºC / +125 ºC